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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0becb8538785669836457b907b38c009908b959c9c1b62df1f2d2a6b8a091b99' 
  AND token = 'zBw88wWZyJzxC2WSJfxKA1Vbu6RxSEW6HfXXC9H+pgo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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