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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f6c6fea64a01d7ced4a56d61cf93b50a46a2a52d979d2ac5819ef0e881409894' 
  AND token = 'Hg46C4O3uaE3AkGLJejU3bJEcgt914CuIZ2Xx8nLVGs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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