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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a13142ddb30f3daaca9bea8461d95d6dc497bdecc2b2faaca6ca1f80207e9c97' 
  AND token = 'whb53pLhFz9TVV9/6BN43dk3tbnmedeEmSxUNCQmjsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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