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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '153768c4fd94c7d1f9e182b458a1c9a97151dafbc07d5cac9ea69ea20ac58b11' 
  AND token = 'PsWB6dGFpWYN2EylFXyfm2LoDauNgiEzXB3UuVHoSSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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