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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cffce3751e990f902d8d8b8635b91221dd5bd3c7e5ca2914f7663d4db56781e' 
  AND token = 'AoFW3R61Y4NWqkPA+ErX92NhW77jnNOYhTOV6haB4kk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}