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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92ecaafc2d3192650e5a57310c65a0eeeaaf84b39fea35157ad864113b2cda11' 
  AND token = 'Wcanuka64pZ3ahqoxS8FSvg4URSi7Cx3+giBCnnNJ0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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