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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2af8eba09484962a0a287bf19906d5d22c16ab9a457a0026852e1854ca69338b' 
  AND token = '5Bp26hfswmNGLca9rB2iDMwha+C7oicNO1mZjIxWXNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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