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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e6bdec5091e99ed7915e2156d1ac62105cf449aac004df97688d2e6d2a0fd8f' 
  AND token = 'tvsiePLY7f9f5HuiaJXmCQTWLITaWHVADMbJV9L/n/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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